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I am implementing security on a WCF service from basicHttp to WShttp, the issue is the service sends some passwords for connections to the database that the user can define,test and save.

The service implements a X509 certificate for the service and client credentials and wanted to know if I should do more to secure the Passwords on the server or the client?

<wsHttpBinding>
    <binding name="CustomLargeHttpsBinding" maxReceivedMessageSize="2147483647">
      <readerQuotas maxDepth="32" maxStringContentLength="2147483647" maxArrayLength="2147483647" maxBytesPerRead="2147483647" maxNameTableCharCount="2147483647"/>
      <reliableSession ordered="false" inactivityTimeout="01:00:00" enabled="false"/>
      <security>
        <transport clientCredentialType="None" proxyCredentialType="None"/>
        <message clientCredentialType="Certificate" negotiateServiceCredential="true" algorithmSuite="Basic256Rsa15" establishSecurityContext="true"/>
      </security>
    </binding>
  </wsHttpBinding>

The typical scenario would go like this :

  • Retrieve encrypted password from database
  • Send data through the service
  • Client uses data to test database connection on server X(Password is put into a secure string here after being decrypted
  • Issue being that I would like to remove the encrypting class as it has a constant key stored in code.

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